/**
 ******************************************************************************
 * Xenia : Xbox 360 Emulator Research Project                                 *
 ******************************************************************************
 * Copyright 2020 Ben Vanik. All rights reserved.                             *
 * Released under the BSD license - see LICENSE in the root for more details. *
 ******************************************************************************
 *
 * @modified    Tom Clay, 2026 - Adapted for ReXGlue runtime
 */

#include <rex/graphics/flags.h>
#include <rex/logging.h>
#include <rex/ui/renderdoc_api.h>

REXCVAR_DEFINE_BOOL(gpu_allow_invalid_fetch_constants, false, "GPU",
                    "Allow invalid fetch constants");
REXCVAR_DEFINE_BOOL(native_2x_msaa, true, "GPU", "Enable native 2x MSAA");
REXCVAR_DEFINE_BOOL(depth_float24_round, false, "GPU", "Round float24 depth values");
REXCVAR_DEFINE_BOOL(depth_float24_convert_in_pixel_shader, false, "GPU",
                    "Convert float24 depth in pixel shader");
REXCVAR_DEFINE_BOOL(depth_transfer_not_equal_test, true, "GPU",
                    "Use not-equal test for depth transfer");
REXCVAR_DEFINE_BOOL(gamma_render_target_as_unorm16, true, "GPU",
                    "Use R16G16B16A16_UNORM for gamma render targets (more accurate than sRGB)")
    .lifecycle(rex::cvar::Lifecycle::kHotReload);
REXCVAR_DEFINE_STRING(dump_shaders, "", "GPU", "Path to dump shaders to");
REXCVAR_DEFINE_BOOL(use_fuzzy_alpha_epsilon, true, "GPU",
                    "Use approximate compare for alpha test values to prevent "
                    "flickering on NVIDIA graphics cards");
REXCVAR_DEFINE_BOOL(vfetch_index_rounding_bias, false, "GPU/Shader",
                    "Apply small epsilon bias to vertex fetch indices before "
                    "flooring to fix black triangles caused by RCP precision");
REXCVAR_DEFINE_BOOL(draw_resolution_scaled_texture_offsets, true, "GPU/Shader",
                    "Scale texture offsets with draw resolution");
REXCVAR_DEFINE_BOOL(gpu_debug_markers, false, "GPU",
                    "Insert debug markers into GPU command streams for tools "
                    "like PIX and RenderDoc. Automatically enabled when "
                    "RenderDoc is detected.");
REXCVAR_DEFINE_BOOL(ac6_fix_trails, true, "AC6",
                    "Fix invisible missile/jet trails: drop stale cached vertex-buffer "
                    "residency so the GPU copy of AC6's fixed-address trail history ring "
                    "refreshes when the CPU writes it. On by default.");

bool IsGpuDebugMarkersEnabled() {
  static bool cached = false;
  static bool result = false;
  if (!cached) {
    cached = true;
    if (REXCVAR_GET(gpu_debug_markers)) {
      result = true;
      REXLOG_INFO("GPU debug markers enabled via CVar");
    } else {
      auto renderdoc_api = rex::ui::RenderDocAPI::CreateIfConnected();
      if (renderdoc_api) {
        result = true;
        REXLOG_INFO("GPU debug markers auto-enabled (RenderDoc detected)");
      }
    }
  }
  return result;
}